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Game model of safety monitoring for arch dam deformation

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Science china(Technological Sciences) 2008年第S2期51卷 76-81页

作者： SU HuaiZhi1,2.WU ZhongRu1,2.GU YanChang1,2.HU jiang1 & WEN ZhiPing3 1 College of Water Conservancy and hydropower Engineering,Hohai University,Nanjing 2.0098,{2. 2.National Engineering research Center of Water resources Efficient Utilization and Engineering Safety,Nanjing 2.0098,{2. 3 Department of Computer Engineering,Nanjing institute of Technology,Nanjing 2.0013,{2. College of Water Conservancy and hydropower Engineering Hohai University Nanjing 210098 China National Engineering research Center of Water resources Efficient Utilization and Engineering Safety Nanjing 210098 China Department of Computer Engineering Nanjing Institute of Technology Nanjing 210013 China

Arch dam deformation is comprehensively affected by water pressure,temperature,dam's structural behavior and material properties as well as other *** them the water pressure and temperature are external factors(source factors) that cause dam deformation,and dam's structural behavior and material properties are the internal factors of deformation(resistance factors).The dam deformation is the result of the mutual game playing between source factors and resistance ***,resistance factors of structure and materials that reflect resistance character of arch dam structure are introduced into the traditional model,where structure factor is embodied by the flexibility coefficient of dam body and the maximum dam height,and material property is embodied by the elastic modulus of *** the basis of analyzing the correlation between dam deformation and resistance factors,the game model of safety monitoring for arch dam deformation is put forward.

关键词： arch dam deformation monitoring model flexibility coefficient game theory

In situ experiments on width and evolution characteristics of excavation damaged zone in deeply buried tunnels

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Science china(Technological Sciences) 2011年第S1期54卷 167-174页

作者： LI ShaoJun 1,FENG XiaTing 1,LI ZhanHai 3,CHEN BingRui 1,jiang Quan 1,WU ShiYong 2.HU Bin 2.&XU JinSong 2.1 State Key Laboratory of Geomechanics and Geotechinical Engineering,institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,{2. 2.Ertan hydropower Development Company,Ltd.,Chengdu 610051,{2. 3 School of resources and Civil Engineering,Northeastern University,Shenyang 110004,{2. 1. State Key Laboratory of Geomechanics and Geotechinical Engineering Institute of Rock and Soil Mechanics Chinese Academy of Sciences Wuhan 430071 China3. School of Resources and Civil Engineering Northeastern University Shenyang 110004 China2. Ertan Hydropower Development Company Ltd. Chengdu 610051 China

The seven long tunnels of Jinping II hydropower station are deeply *** width and evolution characteristics of excavation damaged zone(EDZ) are the key problem to the design of tunnels excavation and *** order to study this problem,several specific experimental tunnels with different overburden and geometric sizes were excavated at this *** borehole camera,sliding micrometer,cross-hole acoustic wave equipment and acoustic emission apparatus were *** paper introduced the comprehensive in situ experimental methods through pre-installed facilities and pre-drilled *** properties of the surrounding rock mass,including cracks,deformation,elastic wave and micro fractures,were measured during the whole process of the tunnel *** width and characteristics of formation and evolution of tunnels EDZ were analyzed under different construction methods involving of TBM and drilling and blasting,the test tunnels were excavated by full-face or two *** relationships between EDZ and tunnel geometry sizes,overburden and excavation method were described as *** results will not only contribute a great deal to the analysis of rock mass behavior in deeply buried rock mass,but also provide direct data for support design and rockburst prediction.

关键词： deeply buried tunnel excavation damaged zone evolution characteristics in situ experiments

RECENT EXPERIENCES OF CFRD IN china

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RECENT EXPERIENCES OF CFRD IN CHINA

International Conference of hydropower

作者： jiang guocheng {2. institute of Water resources and hydropower research Beijing ZHAO Zengkai General Planning and Design institute of Water resources and hydropower Beijing

＜正＞china started CFRD construction with modern technologies since the middle of the 1980s. Till the end of 2.03, there are more than 110 CFRDs constructed or under construction. Among them, 31 CFRDs have a height o... 详细信息

关键词： concrete face rockflll dams face slab rockflll dam

Deformation Control of the 2.0 m High Hongjiadu Concrete Faced Rockfill Dam

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Deformation Control of the 200 m High Hongjiadu Concrete Fac...

第一届堆石坝国际研讨会

作者： Yang Zeyan~1 jiang guocheng~2.1.Hydro{2. Corporation 2.{2. institute of Water resources and hydropower research Beijing 100014 {2.

＜正＞Focus on the problems of CFRD with dam height around 2.0 m,combining with the characteristics of Hongjiadu project,the study on deformation properties and deformation control technology of high CFRD has been carried *** paper discussed deformation properties of 2.0 m high CFRD,with deformation control conducted in terms of the selection of materials,dam body zoning and filling construction,proposed the quantitative index of rockfill pre-settlement and integrated technology of deformation control on improvement of rockfill compaction,reshaping of steep slope inside the dam,setting high modulus zone and overall balanced rise of construction *** measures was applied in Hongjiadu CFRD and achieved good effects of dam deformation control,no structural cracks on face slab and the leakage is small.

关键词： Hongjiadu hydropower Station high concrete faced rockfill dam deformation control technology

On High Earth-Rockfill Dams in china

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On High Earth-Rockfill Dams in China

第10届亚洲地区土壤力学与基础工程会议

作者： jiang G.C. china {2. of Water resources and hydropower research Beijing china

＜正＞The construction of dams and levees with earth and rock materials in china can be tracing back to 5 centenary *** the first rolled earth dam built according to modern design and construction tech- niques was completed in the Fourties of 19 *** was the Yuanyangchi earth dam in Gansu Province with a height of *** embankment dam construction have been developed rapidly since 1949 after the founding of the People’s Republic of *** than 80 thousands dams have been built till now,most of them are earth-rockfill dams of various *** process of development of embankment dam engineering in china can be concluded in three stages:

关键词：

EXPERIMENTAL STUDY OF SCOUR RATE IN CONSOLIDATED COHESIVE SEDIMENT

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Journal of Hydrodynamics 2010年第1期22卷 51-57页

作者： TAN Guang-ming jiang Lei SHU Cai-wen LV Ping WANG Jun State Key Laboratory of Water resources and hydropower Engineering Science Wuhan University Wuhan 430072 China Anhui Bureau of Yangtze River Management Wuhu 241000 China Yangtze River Scientific research institute Wuhan 430010 China

The erosion process of a cohesive sediment after consolidation was studied experimentally in a closed conduit system. The test samples investigated in this study are mixtures of sand and clay with variable compositions and different consolidation times. The main concern of this study is the effects of the dry density of the consolidated sediment on scour rate. A scour rate formula is derived and further interpreted based on the experimental results.

关键词： cohesive sediment consolidation dry density scour rate scour rate formula

SOME NEW IDEAS ABOUT DAM CONCRETE

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SOME NEW IDEAS ABOUT DAM CONCRETE

International Conference of hydropower PROCEEDINGS

作者： jiang Futian china {2. of Water resources and hydropower research (IWHR) Beijing 100038E-mail:chengx@iwhr. com CHEN Gaixin china {2. of Water resources and hydropower research (IWHR) Beijing 100038

＜正＞ This paper summarizes the author’s understanding about dam concrete mix design and its application, and takes it that crack prevention is still the main consideration in dam concrete study. The tensile strain capacity is an important parameter in evaluating crack resistance of dam concrete. The age of 90 days is recommended for the design age. In dam concrete mix design, taking full advantage of activity effect of fly ash and replacing a part of fly ash with stone powder in crushed sand can achieve favorable economic benefit. Tough aggregates should be used for abrasion-resistant concrete of water discharge structure. The designed compressive strength class should be within the range of C40-C60. It is important to enhance crack resistance of the abrasion-resistant concrete and suppress cracking during construction period.

关键词： dam concrete RCC mix design crack. fly ash stone powder

Spatiotemporal characteristics and driving mechanisms of land use/land cover(LULC)changes in the Jinghe River Basin,china

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Journal of Arid Land 2024年第1期16卷 91-109页

作者： WANG Yinping jiang Rengui YANG Mingxiang XIE Jiancang ZHAO Yong LI Fawen LU Xixi State Key Laboratory of Eco-hydraulics in Northwest Arid Region of china Xi'an University of TechnologyXi'an 710048China State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin China Institute of Water Resources and Hydropower ResearchBeijing 100038China State Key Laboratory of Hydraulic Engineering Simulation and Safety Tianjin UniversityTianjin 300072China Department of Geography National University of SingaporeSingapore 117570Singapore

Understanding the trajectories and driving mechanisms behind land use/land cover(LULC)changes is essential for effective watershed planning and *** study quantified the net change,exchange,total change,and transfer rate of LULC in the Jinghe River Basin(JRB),china using LULC data from 2.00 to *** trajectory analysis,knowledge maps,chord diagrams,and standard deviation ellipse method,we examined the spatiotemporal characteristics of LULC *** further established an index system encompassing natural factors(digital elevation model(DEM),slope,aspect,and curvature),socio-economic factors(gross domestic product(GDP)and population),and accessibility factors(distance from railways,distance from highways,distance from water,and distance from residents)to investigate the driving mechanisms of LULC changes using factor detector and interaction detector in the geographical detector(Geodetector).The key findings indicate that from 2.00 to 2.2.,the JRB experienced significant LULC changes,particularly for farmland,forest,and *** the study period,LULC change trajectories were categorized into stable,early-stage,late-stage,repeated,and continuous change *** the stable change type,the late-stage change type predominated the LULC change trajectories,comprising 83.31% of the total change *** period 2.10-2.2. witnessed more active LULC changes compared to the period *** LULC changes exhibited a discrete spatial expansion trend during 2.00-2.2.,predominantly extending from southeast to northwest of the *** driving factors on LULC changes included slope,GDP,and distance from *** interaction detection results imply either bilinear or nonlinear enhancement for any two driving factors impacting the LULC changes from 2.00 to *** comprehensive understanding of the spatiotemporal characteristics and driving mechanisms of LULC changes offers valuable insights for the planning and sustainable management

关键词： land use/land cover(LULC)changes driving mechanisms trajectory analysis geographical detector(Geodetector) Grain for Green Project Jinghe River Basin

What control the spatial patterns and predictions of runoff response over the contiguous USA?

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Journal of Geographical Sciences 2024年第7期34卷 1297-1322页

作者： jiang Shanhu DU Shuping REN Liliang GONG Xinglong YAN Denghua YUAN Shanshui LIU Yi YANG Xiaoli XU Chongyu The National Key Laboratory of Water Disaster Prevention Hohai UniversityNanjing210098China College of Hydrology and Water resources Hohai UniversityNanjing210098China School of Water Conservancy&Civil Engineering Northeast Agricultural UniversityHarbin150030China Department of Water resources China Institute of Water Resources and Hydropower ResearchBeijing100038China Department of Geosciences University of OsloOsloNorway

Understanding the nonlinear relationship between hydrological response and key factors and the cause behind this relationship is vital for water resource management and earth system *** this study,we undertook several steps to explore the ***,we partitioned runoff response change(RRC)into multiple components associated with climate and catchment properties,and examined the spatial patterns and smoothness indicated by the Moran's Index of RRC across the contiguous United States(CONUS).Subsequently,we employed a machine learning model to predict RRC using catchment attribute predictors encompassing climate,topography,hydrology,soil,land use/cover,and ***,we identified the primary factors influencing RRC and quantified how these key factors control RRC by employing the accumulated local effect,which allows for the representation of not only dominant but also secondary ***,we explored the relationship between ecoregion patterns,climate gradients,and the distribution of RRC across *** findings indicate that:(1)RRC demonstrating significant connections between catchments tends to be well predicted by catchment attributes in space;(2.climate,hydrology,and topography emerge as the top three key attributes nonlinearly influencing the RRC patterns,with their second-order effects determining the heterogeneous patterns of RRC;and(3)local Moran's I signifies a collaborative relationship between the patterns of RRC and their spatial smoothness,climate space,and ecoregions.

关键词： hydrological response prediction machine learning accumulated local effect Moran’s Index large-sample study